Reservoir Levels Weather Hydrology

Big Sandy Reservoir is a man-made lake located near Farson, Wyoming. It was created in 1963 as part of a Bureau of Reclamation project to provide irrigation water to the surrounding agricultural areas. The reservoir has a capacity of 73,000 acre-feet and is fed by the Big Sandy River and snowmelt from the Wind River Range. The primary surface flow providers are the Big Sandy River and Cottonwood Creek. The snowpack providers are the Wind River Range and the Wyoming Range. Agriculture is the primary user of the water from Big Sandy Reservoir, with over 28,000 acres irrigated annually. The reservoir also provides opportunities for recreational activities such as fishing, boating, and camping.

June 14, 2024







Lake Or Reservoir Water Surface Elevation Above Ngvd 1929, Ft 24hr Change 0%
Percent of Normal 100%
Minimum 6,725.18 ft
Maximum 6,763.27 ft
Average 6,756 ft
Dam_Height 85
Hydraulic_Height 69
Drainage_Area 439
Year_Completed 1951
Nid_Storage 54400
Structural_Height 85
Foundations Rock, Soil
Surface_Area 2510
Hazard_Potential High
Outlet_Gates Valve - 2
Dam_Length 2350
Primary_Dam_Type Earth
Nid_Height 85

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